Underwriting tells you whether a deal should work on paper. Due diligence confirms whether it actually does — physically, legally, and financially. A commercial property due diligence checklist for an Atlanta-area acquisition typically runs through five categories, each with its own timeline and its own way of derailing a closing if it’s missed.
The Core Due Diligence Checklist
1. Phase I Environmental Site Assessment Standard on nearly every commercial acquisition, and close to non-negotiable for automotive properties — mechanic shops, tire shops, and auto repair facilities carry meaningfully higher environmental risk than most other commercial property types given historical fuel and fluid handling. A Phase I typically takes 2–3 weeks to complete and should be ordered early in the due diligence period.
2. Property Condition Assessment A physical inspection covering roof, HVAC, structural elements, parking lot condition, and major building systems, with a capital expenditure forecast for anything nearing end of useful life.
3. Lease Audit and Estoppel Certificates For income-producing property, this means confirming the actual lease terms match what’s represented in the operating statement — rent escalations, renewal options, tenant responsibilities under the lease, and any side letters or amendments. Estoppel certificates from the tenant(s) formally confirm those terms in writing and are typically a closing condition on any leased commercial asset.
4. SNDA Coordination Subordination, Non-Disturbance, and Attornment agreements protect a tenant’s occupancy rights if the property changes hands or the buyer’s lender forecloses. These need to be in place — or at least in process — before closing on any leased property with institutional financing.
5. Financing Coordination Running the lender’s timeline in parallel with the rest of due diligence — appraisal, environmental review on the lender’s side, loan committee approval — so financing contingencies don’t become the reason a closing slips.
Who Performs These Services
We don’t perform Phase I environmental assessments, property condition reports, or lease audits ourselves — those require licensed environmental consultants, inspectors, and attorneys. What we do is run the process: ordering the right reports in the right sequence, tracking the timeline against your due diligence period, and flagging issues as they surface rather than letting them pile up in the final week before closing.
Due Diligence Timelines Under a 1031 Exchange
Buyers replacing property under a 1031 exchange are working against the 180-day exchange period, not just a standard due diligence period. That compression means environmental and inspection reports need to be ordered immediately upon identification, and estoppel requests need to go out to tenants without delay. We build the due diligence timeline around the exchange deadline from day one rather than treating it as a standard transaction with an accelerated clock.
How This Fits Into a Buy-Side Engagement
Due diligence coordination sits downstream of underwriting — by the time a property enters the due diligence period, the numbers have already been tested and the buyer has decided the deal is worth pursuing under contract. Due diligence is where that decision either gets confirmed or, occasionally, unwound before earnest money is at risk.
Frequently Asked Questions
What is included in commercial property due diligence? Typically a Phase I environmental site assessment, a property condition assessment, a lease audit with tenant estoppel certificates, SNDA coordination for financed acquisitions, and parallel coordination with the buyer’s lender.
How long does due diligence take on a commercial property? Due diligence periods on commercial acquisitions commonly run 30–60 days, though this varies by property type, financing structure, and negotiated contract terms. Automotive properties with elevated environmental review needs sometimes require the longer end of that range.
Do I need a Phase I environmental assessment on every commercial property? Not legally required on every transaction, but strongly recommended on nearly all commercial acquisitions and close to standard practice for automotive and industrial property types given the higher risk of historical contamination.
Who pays for due diligence reports? Typically the buyer, since these reports protect the buyer’s decision to close. Costs and responsibility can be negotiated as part of the purchase contract.